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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott11 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
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v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
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v2.6.11tree c39ae07f39...
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v2.6.13-rc3commit c32511e271...
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-11 00:15:57 -0400
span class="hl ppc">#endif } /* * This is the procedure to handle the receipt of a packet. */ static inline void smc_rcv(struct net_device *dev) { struct smc_local *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; unsigned int packet_number, status, packet_len; DBG(3, "%s: %s\n", dev->name, __FUNCTION__); packet_number = SMC_GET_RXFIFO(); if (unlikely(packet_number & RXFIFO_REMPTY)) { PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name); return; } /* read from start of packet */ SMC_SET_PTR(PTR_READ | PTR_RCV | PTR_AUTOINC); /* First two words are status and packet length */ SMC_GET_PKT_HDR(status, packet_len); packet_len &= 0x07ff; /* mask off top bits */ DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n", dev->name, packet_number, status, packet_len, packet_len); back: if (unlikely(packet_len < 6 || status & RS_ERRORS)) { if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) { /* accept VLAN packets */ status &= ~RS_TOOLONG; goto back; } if (packet_len < 6) { /* bloody hardware */ printk(KERN_ERR "%s: fubar (rxlen %u status %x\n", dev->name, packet_len, status); status |= RS_TOOSHORT; } SMC_WAIT_MMU_BUSY(); SMC_SET_MMU_CMD(MC_RELEASE); lp->stats.rx_errors++; if (status & RS_ALGNERR) lp->stats.rx_frame_errors++; if (status & (RS_TOOSHORT | RS_TOOLONG)) lp->stats.rx_length_errors++; if (status & RS_BADCRC) lp->stats.rx_crc_errors++; } else { struct sk_buff *skb; unsigned char *data; unsigned int data_len; /* set multicast stats */ if (status & RS_MULTICAST) lp->stats.multicast++; /* * Actual payload is packet_len - 6 (or 5 if odd byte). * We want skb_reserve(2) and the final ctrl word * (2 bytes, possibly containing the payload odd byte). * Furthermore, we add 2 bytes to allow rounding up to * multiple of 4 bytes on 32 bit buses. * Hence packet_len - 6 + 2 + 2 + 2. */ skb = dev_alloc_skb(packet_len); if (unlikely(skb == NULL)) { printk(KERN_NOTICE "%s: Low memory, packet dropped.\n", dev->name); SMC_WAIT_MMU_BUSY(); SMC_SET_MMU_CMD(MC_RELEASE); lp->stats.rx_dropped++; return; } /* Align IP header to 32 bits */ skb_reserve(skb, 2); /* BUG: the LAN91C111 rev A never sets this bit. Force it. */ if (lp->version == 0x90) status |= RS_ODDFRAME; /* * If odd length: packet_len - 5, * otherwise packet_len - 6. * With the trailing ctrl byte it's packet_len - 4. */ data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6); data = skb_put(skb, data_len); SMC_PULL_DATA(data, packet_len - 4); SMC_WAIT_MMU_BUSY(); SMC_SET_MMU_CMD(MC_RELEASE); PRINT_PKT(data, packet_len - 4); dev->last_rx = jiffies; skb->dev = dev; skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); lp->stats.rx_packets++; lp->stats.rx_bytes += data_len; } } #ifdef CONFIG_SMP /* * On SMP we have the following problem: * * A = smc_hardware_send_pkt() * B = smc_hard_start_xmit() * C = smc_interrupt() * * A and B can never be executed simultaneously. However, at least on UP, * it is possible (and even desirable) for C to interrupt execution of * A or B in order to have better RX reliability and avoid overruns. * C, just like A and B, must have exclusive access to the chip and * each of them must lock against any other concurrent access. * Unfortunately this is not possible to have C suspend execution of A or * B taking place on another CPU. On UP this is no an issue since A and B * are run from softirq context and C from hard IRQ context, and there is * no other CPU where concurrent access can happen. * If ever there is a way to force at least B and C to always be executed * on the same CPU then we could use read/write locks to protect against * any other concurrent access and C would always interrupt B. But life * isn't that easy in a SMP world... */ #define smc_special_trylock(lock) \ ({ \ int __ret; \ local_irq_disable(); \ __ret = spin_trylock(lock); \ if (!__ret) \ local_irq_enable(); \ __ret; \ }) #define smc_special_lock(lock) spin_lock_irq(lock) #define smc_special_unlock(lock) spin_unlock_irq(lock) #else #define smc_special_trylock(lock) (1) #define smc_special_lock(lock) do { } while (0) #define smc_special_unlock(lock) do { } while (0) #endif /* * This is called to actually send a packet to the chip. */ static void smc_hardware_send_pkt(unsigned long data) { struct net_device *dev = (struct net_device *)data; struct smc_local *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; struct sk_buff *skb; unsigned int packet_no, len; unsigned char *buf; DBG(3, "%s: %s\n", dev->name, __FUNCTION__); if (!smc_special_trylock(&lp->lock)) { netif_stop_queue(dev); tasklet_schedule(&lp->tx_task); return; } skb = lp->pending_tx_skb; if (unlikely(!skb)) { smc_special_unlock(&lp->lock); return; } lp->pending_tx_skb = NULL; packet_no = SMC_GET_AR(); if (unlikely(packet_no & AR_FAILED)) { printk("%s: Memory allocation failed.\n", dev->name); lp->stats.tx_errors++; lp->stats.tx_fifo_errors++; smc_special_unlock(&lp->lock); goto done; } /* point to the beginning of the packet */ SMC_SET_PN(packet_no); SMC_SET_PTR(PTR_AUTOINC); buf = skb->data; len = skb->len; DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n", dev->name, packet_no, len, len, buf); PRINT_PKT(buf, len); /* * Send the packet length (+6 for status words, length, and ctl. * The card will pad to 64 bytes with zeroes if packet is too small. */ SMC_PUT_PKT_HDR(0, len + 6); /* send the actual data */ SMC_PUSH_DATA(buf, len & ~1); /* Send final ctl word with the last byte if there is one */ SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG); /* * If THROTTLE_TX_PKTS is set, we stop the queue here. This will * have the effect of having at most one packet queued for TX * in the chip's memory at all time. * * If THROTTLE_TX_PKTS is not set then the queue is stopped only * when memory allocation (MC_ALLOC) does not succeed right away. */ if (THROTTLE_TX_PKTS) netif_stop_queue(dev); /* queue the packet for TX */ SMC_SET_MMU_CMD(MC_ENQUEUE); SMC_ACK_INT(IM_TX_EMPTY_INT); smc_special_unlock(&lp->lock); dev->trans_start = jiffies; lp->stats.tx_packets++; lp->stats.tx_bytes += len; SMC_ENABLE_INT(IM_TX_INT | IM_TX_EMPTY_INT); done: if (!THROTTLE_TX_PKTS) netif_wake_queue(dev); dev_kfree_skb(skb); } /* * Since I am not sure if I will have enough room in the chip's ram * to store the packet, I call this routine which either sends it * now, or set the card to generates an interrupt when ready * for the packet. */ static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct smc_local *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; unsigned int numPages, poll_count, status; DBG(3, "%s: %s\n", dev->name, __FUNCTION__); BUG_ON(lp->pending_tx_skb != NULL); /* * The MMU wants the number of pages to be the number of 256 bytes * 'pages', minus 1 (since a packet can't ever have 0 pages :)) * * The 91C111 ignores the size bits, but earlier models don't. * * Pkt size for allocating is data length +6 (for additional status * words, length and ctl) * * If odd size then last byte is included in ctl word. */ numPages = ((skb->len & ~1) + (6 - 1)) >> 8; if (unlikely(numPages > 7)) { printk("%s: Far too big packet error.\n", dev->name); lp->stats.tx_errors++; lp->stats.tx_dropped++; dev_kfree_skb(skb); return 0; } smc_special_lock(&lp->lock); /* now, try to allocate the memory */ SMC_SET_MMU_CMD(MC_ALLOC | numPages); /* * Poll the chip for a short amount of time in case the * allocation succeeds quickly. */ poll_count = MEMORY_WAIT_TIME; do { status = SMC_GET_INT(); if (status & IM_ALLOC_INT) { SMC_ACK_INT(IM_ALLOC_INT); break; } } while (--poll_count); smc_special_unlock(&lp->lock); lp->pending_tx_skb = skb; if (!poll_count) { /* oh well, wait until the chip finds memory later */ netif_stop_queue(dev); DBG(2, "%s: TX memory allocation deferred.\n", dev->name); SMC_ENABLE_INT(IM_ALLOC_INT); } else { /* * Allocation succeeded: push packet to the chip's own memory * immediately. */ smc_hardware_send_pkt((unsigned long)dev); } return 0; } /* * This handles a TX interrupt, which is only called when: * - a TX error occurred, or * - CTL_AUTO_RELEASE is not set and TX of a packet completed. */ static void smc_tx(struct net_device *dev) { struct smc_local *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; unsigned int saved_packet, packet_no, tx_status, pkt_len; DBG(3, "%s: %s\n", dev->name, __FUNCTION__); /* If the TX FIFO is empty then nothing to do */ packet_no = SMC_GET_TXFIFO(); if (unlikely(packet_no & TXFIFO_TEMPTY)) { PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name); return; } /* select packet to read from */ saved_packet = SMC_GET_PN(); SMC_SET_PN(packet_no); /* read the first word (status word) from this packet */